[SUBJECT] The subject of the present invention is to provide a heat-insulating structure for a car, the heat-insulating structure having a light weight, and excellent heat-insulating and sound absorbing performance. [METHOD FOR SOLVING THE SUBJECT] A heat-insulating and sound absorbing material is provided in the invention. The heat-insulating and sound absorbing material is characterized by an air-flow resistance controlling layer which lies between an air-permeable rigid layer and an air-permeable resilient layer, wherein the air-flow resistance controlling layer is a pulp fiber layer or a laminated layer of a pulp fiber layer and a nonwoven fabric having a mass per unit area in the range of between 10 and 50g/m 2 , a thickness in the range of between 0.08 and 0.30mm, and an air-flow resistance in the range of between 0.07 and 3.00 kPa·s/m.
INSULATING MATERIAL AND VEHICULAR INSULATION STRUCTURE
WÄRMEISOLIERENDES UND SCHALLABSORBIERENDES MATERIAL FÜR DIE WÄRMEISOLATIONS- UND SCHALLABSORPTIONSSTRUKTUR EINER FAHRZEUGKAROSSERIE
MATÉRIAU D'ISOLATION ET STRUCTURE D'ISOLATION DE VÉHICULE
2017-02-08
Patent
Electronic Resource
English
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / D21H PULP COMPOSITIONS , Faserbreimischungen [Pulpen] / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES |
European Patent Office | 2020
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